Heddle.



W. FBI-IR & J. KAUPMANN.

HEDDLB.

APPLICATION FILED JULY 1a, 1909.

Patented Feb.-22,1910.

WITNESSES UNITED sTA' rns PATENT OFFICE.

WILLIAM FEHR AND JACOB KAUFMANN, PHILADELPHIA,"PENNSYLVANIA, AS-

SIGNORS' TO STEEL HEDLDL'E MANUFACTURING COMPANY, OF" PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

HEDDLE.

Specification of Letters Patent. Patented Feb, 22, 1910 Application filed July 18, 1908. Serial No. 444,238.

which the following is a specification.

Our invention relates to heddles and it has particular relation to the formation and outline of the mortises thereof through which the cross bars of the heddle frame pass. I

The principal object of our invention is to rovide the mortises of the heddles at their hearing portions with increased bear-' ing surfaces having certain characteristics, whereby when the heddle is shifted out-of its normal position on the heddle-frame rods it may readily return to' such normal osition, thus preventing the formation 0 uneven weaves and the breaking of the warp thread. The structure of our invention also results in increased life of the heddles due to the .larger bearing surface provided at the point of greatest wear, and for this reasonour invention is particularly adapted for use 'in connection with heddles made of thin flat metal.

Our invention-finds a valuable: applica-- tion in connection with that class of heddles which while made of thin flat metal are stillfurther reduced in thickness at the and described in Letters Patent No. 748,713 granted to NVilliam Fehr, Jan. 5, 1904 side elevation one of the end or mortise por-' The nature and characteristic features of our invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part hereof, in which Figure 1 is a side elevationof a heddle ci'nb'odying themain features of our invention, Figs. 2 and 3 are detail viewsenlarged, illustrating respectively in section and in tions of the heddle, and Figs. A and 5 are similar views of a modified form 'of our invention.

Referring now more particularly to Figs.

1, 2 and 3 of the drawings,-4 is a thin andnarrow strip of metal or flattened wire, which is provided with the usual central warp-eye' 5, and at its respective ends with the mortlses 6, the formation and outline of -which. constitute the subject matter of the present invention.

7 The mortises 6 in the present instance may be formed by first slotting the strip and then expanding the 'slots by swaging the strip at the ends of the slots into openings of oblong outline, in a manner simllar to that described in the aforesaid Letters Patent N 0. 748,713. By.

the swaging of the strip, fins 7 and 8 of compressed metal are formed at the respective ends of the openings or mortises 6,

these fins being so cut or swaged at their free margins as to have straight edges 11.

The fins 7 adjacent the ends of the heddle" are then manipulated to form the lateral projections or extensions 10 which are slightly bent or rounded in an upward direction, in cross section, forming rounded bearing surfaces of greater lateral extent than the metal from which they are formed. The particular method by which the extensions 10 are formed on the this 7 forms no part ofthis invention but will be described and claimed in another application for Letters Patent to be filed by us, Briefly this method consists in forcing a rapidly rotating pin against the free margin of the fin 7 so-that the metal 'of'the -fin is upset and curled on either face of the fin and thus forms. the extensions 10. As a resultof this particular method, the extensions 10 will have a curvilinear or arched shape outline as shown in Figs. 1 and 3 of the drawings, and in cross-section being thickest at the center and merging into the sides of the mortise at the point where they fin 7 terminates in the sides of the mortise. The extensions 10 may correspond in lateral extent to the thickness of the heddle proper or they may be of slightly greater or less extent as "desired.

In the form of our invention shown in which is adapted for use in connection with .thinner heddles where the fins 7 are either omitted or cut away before the lateral extensions 10 are formed. There is thus provided a bearing surface for the mortises which is of greater lateral extent than the metal from which it is formed and which greatest strain and thus materially prolong the life of the same.

Having thus described our invention, what We claimand desire to secure by Letters Patent is:

1. A heddle consisting of a thin flat strip of metal having mortlses provided with integral bearing portions of greater lateral extent than the adjoining thickness of the metal.

2. A heddle consisting of a thin flat stri of metal having mortises provided wit integral bearing portions of a greater lateral extent than the adjoining thickness of the metal, said bearing portions having'rounded edges. 7

3. A heddle consisting of a thin flat strip 25 of metal having mortlses provided with integral bearing portions of a greater lateral extent than the adjoining thickness of the metal, said bearing portions having rounded edges and being of arched or curvilinear an outline.

4. A heddle consisting of a thin flat strip of metal having 'mortises and reduced portions adjacent the ends of the mortises, and having integral bearing portions extending 3:3 laterally fromsaid reduced portions.

In testimony whereof we have hereunto signed our'naines in the presence of two witnesses. WILLIAM FEHR. JACOB KAUFMANN.

Witnesses: r x

J As; O. WOBENSMITH, HOWARD S. OKIE. 

